Lower extremity venous ulcer is a common clinical disease, a condition of surface ulceration caused by metabolic disorders of the lower extremities. Lower extremity venous ulcers are mainly caused by peripheral vascular diseases, such as atherosclerotic occlusive disease and thromboembolic vasculitis. Ulcers or gangrene start from the foot, which can manifest as numbness and coldness at the unterminal end of the limb, ulceration of the limb, pain, purulent secretion, swelling and other symptoms. Clinical often take skin valve transplantation, venous valve repair and other treatment methods. Lower extremity venous ulcers should go to the hospital in time and have regular review to avoid further expansion of the disease. Daily attention should be paid to avoid eating spicy and stimulating food, pay attention to keep the affected area clean, to elevate the affected limbs, change the bed sheets, pay attention to personal hygiene and cleanliness.